STRUCTURAL PERFORMANCE EVALUATION UNDER HIGH AXIAL FORCE CONDITIONS OF A BRIDGE PIER FOUNDATION USING STEEL SEGMENT PRESS-FIT METHOD

抄録

 In bridge pier foundation construction, rapid construction may be necessary in narrow areas, mainly in urban locations. In the previous paper, the authors proposed a new structure to construct bridge pier foundation rapidly in narrow areas by changing the hoop of reinforced concrete foundation to the steel segment. The behavior under the low axial force condition was then evaluated. In this study, the analytical model construction and evaluation are carried out referring to the results of the reversed cyclic loading test using scale test specimens of the proposed mixed structural foundation. Then, it was confirmed that the mixed structural foundation in the high axial force condition has the same structural performance as that of the general reinforced concrete foundation. In addition, the behavior of steel segments consisting of multiple bodies when the lateral restraint effect are exerted was clarified for the construction of a practical design formula in the future.